‘Cold-Fuel Pressure Builder’ Solves the Two-Fuel Quandary
Chart Industries is promoting “a breakthrough technology” for liquefied natural gas fuel tanks that solves the problem of multiple dispensers for different types of truck engine systems.
“Previously,” states a release, “LNG fuel stations were required to deliver LNG at two different pressures and saturation temperatures… driving fuel station infrastructure complexity and cost.”
Chart’s new onboard CPB, for Cold-Fuel Pressure Builder, can accept cold fuel (saturated at less than 60 psi) “and consistently support most engine pressure requirements.”
Product Could Help Simplify Fueling Station Design
The product is in field trials now, says Chart vehicle fueling sales manager Kevin Lutin. It will carry a single-unit list price of just under $3,000 as both a new tank option or as a retrofit, he told F&F, noting that multiple fleet orders will qualify for volume discounts.
The CPB, together with existing Chart LNG vehicle fuel systems, “will work safely and reliably and with minimized chance of venting” during vehicle operation and fueling. It enables “simplified fuel station design and reliable SI [spark ignition] engine operation,” the company says, “independent of LNG fuel station capability.”
The CPB “enables a simplified vehicle fuel system, which does not require additional complexity, such as an on-board vehicle pump to deliver fuel to the engine.”
The following CPB features were highlighted at ACT Expo in Washington, D.C. last week:
- operates when “under-saturated” or “cold fuel” is dispensed;
- enables a modest increase (typically 4.0 to 6.5%) in fuel density;
- provides adequate pressure for drive-away after fueling;
- actively saturates the fuel in the vehicle tank, if necessary;
- utilizes vehicle’s electrical system for saturation energy; and
- retrofits to any Chart LNG vehicle fuel system.
Further, the firm says, a CPB-equipped Chart LNG fuel system will operate just as it does now when it receives saturated LNG (typically above 100 psi) from a fuel station. If it receives lower pressure (and saturation temperature) cold fuel from the fuel station, the CPB automatically increases the pressure (and temperature) of the vehicle fuel tank to reliably meet the engine’s pressure requirements.
Chart notes that the new system was developed “based in the input of industry partners, such as fuel station operators and truck manufacturers, to work with either spark-ignition or compression-ignition indirect injection (IDI) fuel systems.”
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Source: Chart Industries with Fleets & Fuels follow-up